danny0405 commented on a change in pull request #10224: 
[FLINK-14716][table-planner-blink] Cooperate computed column with push down 
rules
URL: https://github.com/apache/flink/pull/10224#discussion_r347192732
 
 

 ##########
 File path: 
flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/planner/plan/nodes/logical/FlinkLogicalDataStreamTableScan.scala
 ##########
 @@ -84,7 +83,7 @@ object FlinkLogicalDataStreamTableScan {
   }
 
   def create(cluster: RelOptCluster, relOptTable: RelOptTable): 
FlinkLogicalDataStreamTableScan = {
-    val table = relOptTable.unwrap(classOf[Table])
+    val table = relOptTable.unwrap(classOf[TableSourceTable[_]])
 
 Review comment:
   Yep. thanks.

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